Swizzling Vertex Arrays, Vertex Buffer Objects and Shaders

Question

I have a basic understanding of Vertex Arrays, Vertex Buffer Objects and Shaders. However, I am not sure if I can reuse them or whether the association is bijective.

For example:

Can I use the same Vertex Buffer Object in different Vertex Arrays?
Can I use the same Vertex Array in different Shaders?

fen · Accepted Answer · 2013-01-20 15:58:37Z

3

Yes you can :)

VBO - controls where your data is stored

VAO - controls layout and binding (you can have several VAO that points to the same VBO, but in different ordering)

Shaders - are responsible for doing something with the data, they can be used with different VAO/VBO combinations (but that combination must match attribute layout in the shader of course)

answered Jan 20, 2013 at 15:58

fen

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2 Comments

hanno Over a year ago

Thanks. So when I want to use one VAO with multiple shaders, I only need to make sure that the attribute locations are the same? How do I switch the VBO for a VAO? Just by calling glBindBuffer after calling glBindVertexArray?

fen Over a year ago

here is a good tutorial on usig VAO: ogldev.atspace.co.uk/www/tutorial32/tutorial32.html, but basically you can bind new VBO after you bound VAO.

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